Mechanical calculator.



MEGHANIOALUALGULATOR.

A PLIUATION FILED II'III No. 785,097. I ATENTED MAR. 2l, 1905.

J. AMILTUN. EGHANL GALULATOR.

.LPPLIOTIGN FILED AUG. 28, 1903.

11 SHEETS-SHEET 2.

Y @13 Mummy f hwy ATENTED MAR. 2l, 1905.

' .L R. HAMILTON.

MECHANICAL CALCULATCL.

APPLICATION FILED AUG. 28, 1903.

ll SbEETS-SHEBT PATBNTBD MAR. 21, 1905.

11 SHEETS-BREST 4.

l .Aklfl A L.

' J. R. HAMILTON. MECHANICAL CALCULATOR. APPLIOATION FILED AUG. 2a, 1903.

No.v 785,097.

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SIN

PTENTED MAR. Z1, 1905.

MECHANICAL CALC APPLIOATON FILED .AUGA 28, 1903.

11 SHEETS-SHEET 5,

PATEN'I'EI) MAR. 2l, I905.

J. R. HAMILTON. MECHANICAL CALCULATOR.

APPLICATION FILED AUG. 28, 1903.

l1 SHEETS-SHEET 6.

4J 4Z if XVIII'MIIIHIII I mlmlllwi WWWWWWWMWWWWWWMWWWWWWWWWM @WIT/www0 www No. 785,097. PATENTED MAR. 21, 1905. J. R. HAMILTCN.

MECHANICAL CALCULATOR.

APPLICATION FILED AUG. ze, 1903.

11 SHEETS-SHEET 7.

v Qilwwzoofe A PATENTED MAR. 2l, 1905.

J. R. HAMILTON. GHANIGAL CALCULATOR.

APPLOATIGN FILED AUGZS,1903.

11 SHEETS-BERT a.

NO. 785,097. PATENTED MAR.21, 1905 J. R. HAMILTON. MECHANICAL CALCULATOR.

APPLICATION FILED AUG. 28, 1903.

11 SHEETS-SHEET il,

`:I ll lllil PATENTBD MAR. 2l, 1905.

J. R. HAMILTON. MECHANICAL CALCULATOR.

APPLICATION FILED AUG. 28, 1903.

1l SHEETS-SHEET l0.

S14/vamo@ ff, .JVM frat., 1J Hmmm w* L PATLNTLD MAR. 21, 1905.

.L R. HAMILTON. MECHANICAL CALCULATOR.

APPLICATION FILED AUG. 28, 1903.

11 SHEETS-SHEET ll.

lu von lion /f//W'f fm* Patented March 21, 1905.

UNITED STATES PATENT OEEicE.

JOHN R. HAMILTON, OF MOUNT KlSOO, NEWX'ORK, ASSlhNOIt TO DAIHUS P. SAOKETT, OF NEW YORK, N. Y.

MECHANlCAL CALCULATOR.-

SPECIFICATION, forming part of Letters Patent No. 785,097, dated March 21, 1905.

Application filed August 28, 1903. Serial No. 171,062.

To all. whom, it 'Hwy concern/:

Beit known that I, JOHN lt. lilAMnJroN, a citizen of the United States, residing at Mount Kisco, in the county of Westchester and State ofNew York, have invented -ertain new and useful lmpr vements in Melhanical Calculators, of which the following is aspeciiication.

My present invention relates to mechanical calculators of that class in which the positions of the recordingl wheels just prior to the printing' operation are accomplished by snitable actuating mechanism sety into operation bythe action of a series of keys set by the hand of the operator.

My invention further relates to certain improvements in the means for throwingthe recorder-wheelsinto printing position, in means for carrying, and in means for totaling' the sums indicated by the keys, together with means for returning all parts to their normal positions, and, lastly, my invention relates to many improved details of structure clearly hereinafter described, and shown in the accompanyingdrawings. in which like reference characters referto like parts, and in which-wm Figure 1 is a plan view of a mechanical cal* vculator embodying my invention. `Fig. 2 is a sectional plan View of the same. Fig. 3 is" a longitudinal sectional elevation of the same. Fig. Li 1s a transverse sectional elevation of the keyboard and keys of the machine. Fig.

" 5 is a detail perspective View of the releasebar. Fig. (i is a detail sectional elevation showing the position of the recorder-frame just prior to the printing operation. Fig. 7 is a like view duringprintingoperation. Fig. 7 is a sectional plan view showing the transmitting-wheel,` its bell-crank, its adjacent spring-controlled gear, and the latch holding said gear. Fig. 8 'is a similar View immediately after the printing operation. Fig. 8 is an enlarged detailllit/iew, partly in section, of the carrying mechanism with parts in normal positions. Fig. 8" is a similar view, on a larger scale, with parts removed, showing position of parts during a "transfer-upon-atransfers operation; 8", a plan view of portionibf carrying mechai'iism, partly in seetion. Fig. 8 a frontclevation ofthe same. Fig. SC is a detail rear elevation, partly in fsection, showing the ear'igving connections between one of the accumulating-wheels andthe gear of next higher denomination. Fig. ,tl is a top plan view of the recorder mechanism, showing the recordenwheel-detaining diiicc. Fig. lO is a side elevation of a portion of the same, showing a side view of said (,lctaining device. Fig. l1 is a detail view of one of the recorder-wheels. Fig. 12 is a vertical section of the same. Fig. 13 isa detail sectional view of the actuatii'igpin and its casing of the wheel-detaining device. tail view of the transmitting-pinion frame. Fig. l5 is a detail sectional view showing the slide-bar-return mechanism before the bars have been returned to their normal position. Fig. 1G is a like View showing a portion of said mechanism during the return movement. Fig. 17 is a like view showing position of actuating-arm after same has passed from engagement with the slide-bar-return mechanism.' Fig. 18 is' a sectional side elevation of the recorder mechanism during the totaling' operation. Fig.l 19 is a sectional plan view of a portion of the totaling niehanisn'i. Fig. 2O is a rear elevation of the printiiig-platen carriage. Fig. 2l is a detail perspective of the platen-carriage sleeve. Fig. 22 lis a bottorn View of the same, showing said sleeve on its track and showing track-standards in section; and Fig. 23 is a detail sectional view of the track and Iits standards, showing countersnnk screws securing same together.

VT/e fj//w-.wft/zg/ /'ufv/nl/t/,w/z.wel is the casing' of my improved calculator having a front 2 with a keyboard 4 represents ya series of keys comprising nine rows of nine keys, each having suitable characters on the buttons of said keys corresponding to the type/characters on the recorder-wheels. Each of the keys` has a stem 5, passing through the keyboard l. ainl a channel-iron 6, there being a clannel-iron (S for cach of the rows yof keys. ,flach of the stems 5 carries a pinf'within its channel-iron e, and extending transversely ,thereaci .1 ,z

Fig. lllv is a devIO the shaft 34. ln order to limit the forward movement of the handle 32,1 provide a metall'ic strap-60, pivoted at its forward end to thc arm 59 and at its rear end to a pivotal arm 62 on the post 58, said strap 66 being adapt-ed at thelimit of the forward niovcmentof the handle 32 to strike the shaft 34, thereby preventing further movement of the handle in the forward direction. As the handle 32 is brought forward in opposition to the spring 57 sufficient energy is stored in said spring to upon the release of handle 32 return the frame 44 to its normal position. During such return movenientof the frame 44 the lever 36 will retuin the crank 38 to its normal position, the pin 46 retracing its course through the slots 41 in thc recorder-whcels and returning .those recorder-wheels to their Zero positions which have been moved forward to bring their selected type into position for printing. During such return movement of the recorderwheels the accumulatingwheels 52, which have up till this time been held in mesh with the teeth .56 on said recorder-wlieels 36, will be rotated toward the rear of the machine a number of teeth or notches correspondiiig to the 4 number oftypc utilized on itsrecorder-w heel.

As the recorder-wheels 3l) reach their Zero positions the'friction-roller 54 engages the arn'i of thc double bell-crank, and as the arm 36 has a slight movement after the crank-arn1 38 has reached its normal position the arm 75 is raised, tlii'owing the double bell-crank to. ward the front ot' the machine to throw the accumulating-wheels 52 out of engagement with teeth 56 and into engagement with gears 69. This operation continues, the pin 63 on -one of the teeth of each of the accui'nulatii'igwheels 52 upon each revolution of its wheel 52 striking the inclined end ofv a hooked bellcrank 64, pivotcd on a shaft 65 on the frame 56, raising said hell-crank 64 and through the upper arm 66 of said bellecrank disengaging a latch 67 from a'projection 6in on the gear 69 in line with the next adjacent accumulatingwheel 52 of higher denomination and allowing said gear 69, which is controlled by a suitable spring, (sce Fig. 7,) to drop a distance equal to one circumferential pitch ot the accumulating-wheels, this being' practicable because gears 69 are out of mesh with wheels 52, the latter being in mesh with teeth 56. 'lhe gears 69 are mounted on a shaft 76, extending transverse the frame. Each of the gears 69 is provided with a segmental slot 71,engaging a pin 72 in a slotted link 73.

74 is a pin seated in the lever 236 and engaging the slo't'in link 73. lnasinuch as the last part of the return movement of the' lever 36 is accomplished after the crank-arm 38 has reached its normal position and inasmuch the friction-roller 54 at this stage ofthe return movement of the lever 36 strikes the arm 75/of the double bell-crank 49 to return the accumulating-wheels 52 into mesh with the gears 69 it will be seen that such return of the accumulating-wheels.52 is accomplished after the recorder-wheels have been returned to their zero positions. I'During this time the pin 74 reaches the lower end of the slot in link 7? and through the link 73 raises the gears 69 which have heen lowered until the latch 67slides over the projection 68 to hold such gears in elevated position. During such upward movement of said gears 69, inasmuch as all of the gears 69 are at this time in mesh with the accumulating-wheels 52, each of those accumulating-wheels 52 which are in line with the gears 69 which have been operated are turned forward to the lextent of one circumferential pitch.

From the foregoing it will be seen that when the accumulating-wheel 52 has been rotated a complete revolution by its recorderwhcelsuch, for instance, as by the depression of the 67 hey succeeding the depression of the 4 key in the unts-column-the said wheel 52 will he progressed ten teeth or notches. lhe hell-crank hook 64 in line with the units accumulatiiig-wheel being raised and the latch engaged b v said hell-crankhaving been disengaged from the projection 68 on its respective gear 69, the wheel 52 of the next higher denomination that is, in the i tens dm'iominatiomwill be progressed in a manner already described a distance equal to one Itooth or notch. resuming the tens accuinula-ting-wheel 52 to have been iii its zero position, the same will beat the end of such operatioi'i in its 1 position, \whilc the units accumulating-wheel 52 will have. been progressed to its Zero position.

In order to provide for a transfer upon a transfer that is, in the case where two or more o1 the wheels are in their 2) positions, the pin 61. on each of the wheels 52 is extended intoI the path of engagement with the teeth on the gear of next higher denomination, the said` teeth on the gear 69being of sufficient width to overlap its wheel 52 and pin 63 of next lower denomiiiation, as clearly shown in Figs. 6 and 8c. lt will now be presinned that two or iiioreiot' the wheels 52 are in their 9 positions. One of said wheelsof lower denomination is rotated a distance equal to one'tooth or notch b v its recorder-wheel. The effect of thisl rotation will be to raise the hooked arm 64 in line with the said wheel 52, releasing the latch 67 and dropping' the gear 69 of next higher denomination which was in engagement with the said latch. The next operation occurs at the end of the downward movement of thc-arm 36, at which time the link'73, through its pin 72, returns gear 65), which has been disengaged from its latch 67 and dropped, to its normal or latched position and rotating the iii-st transmitting-wheel 52 of higher denomination than the wheel 52 initially operated a distance of one tooth or notch, carrying such gear-operated accumulat- ICS llO

IZO

ISO

ine'uvheel of higher denomination to its Zero l l osition hy the 'friction between the the ends ol the notches l2 until l idehars 9 are returned to their normal iositions, when the keys, being released hy l rietionai contact, are raised by their 8, liowing' the release-hail 13 to he .iwardly to its normal iiosition bythe 3, the spring-pressed arms i7 on said ions until they refrister with the notches il) I 1 e I s ihuediars, said notches then allowing the arms i? to he actuated hy their springs 'to raise 'to their normal position to hold the hars l) aen' fst 'norement until they are again released h3 :lotion ol tue keys.

the slidahars is prorided with ay depending` projection'l'h, adapted to he engaged hy a transverse hai' l?, carried by a 'pair ot arms lll, piyoted to t'icsides olE the machine-casing.

l t) is a link i' i giyoted at one end to one of the arnxsi'i and having a triangular slot 8O ada'o 2,e a pin lll on a rigid upright arie to the side ot' the casing'. l: with a hooked eiid S3, adrp trigO n' het, mounted on to pon the return of the handle tr position trigger Se, in enenit e hooked end of the link i Y ran' said link and arms 78 'torn 1 iri'iuel the trai'isverse har 77 to 4,5 return the s 3 dhars Si through their depend- E proieA kns TG to their normal positions. i he link Th travels 'forward the pin 8lA in engagementwith 'the triangular slot SO raises said ink until the hooked end 83 'clears' the 5o trigger Se, allor-Jing' the handle 32 to he forced hack to its normal position,

oo ease-hails 12% to allowall of the slide-hars 9 to he. drawn ier-ward tothe full extent bythe spriiig' Q2.

89 is the rearwardly-extending' arm of the lever 88 and adapted to engag'ethe under side,vv

veneer upon dei'iressing' the lever 88 the arm Si) will he raised, therehy throwingr the frame 5() tothe rear to throw the wheels into mesh with the teeth 56 upon the recorder-wheels 30. Arm Si) is provided with anupturned end 9i, adapted to hear against the extension 90 when the key is released and arm H9 descends to shift the wheels 52 out ot' niesh with the recorder-wheels 3l). ln order to reach a total ot' the sums which hare heen recorded by the recorderwheels, the key 85 is depressed, throwingalown the general release-hail 87 to release the se'i'eral .slide-hars il and to throw the accuinMating-wheels into mesh with the recorder-wheels 3o. 'l`he handle 32 is next drawn 'forward hy the operator, forcing the crank 3S to its lilted position and the pin et), through the slots -l-i in the wheels 30, allowing' each oi' the wheels Sill to rotate in the direction ot the arrow, Fig. lh, until the pin (33 on its particular accumulatiugr-wheel 52 rotating' in the direction ol its arrow is arrested at its` zero position hy the hooked end.

ot' the hell-crank o-l, in which. position said recorder-wheel will he held against further rotation. Further'operation ofthe handle 32 will 'torce the recorder-wheels into printing' operation, as hereinhe'iore described. lt' it is desired-to 'return the machine to Zero after the totalingoperatori has been completed, the handle S is held in its lower position until after a ke h' heen allowed to ascend, said Yey being forced up hy the springs 20 ot' the hails l?) through tue g'enm'al rele; vail 87. li" it is desired to continue the addttion roo o'r' su is held in i handle b2 has the amount recordedj" the key is depressed position iu'xtil alter the heen raised, so that the return ot' the seyeril recorder-u'heels to their Zero positions will return the aecun'nilating'rxheels 105 to the advanced positions oreupied hythein immediately heiorr the i'i'italine' operation. inasmuch as the double hell-crank il in the totz'iline' operation is thrown to the rear prior to the operation oi' the handle 32 the arms 75 11o will olistruet the friction-roller ,il upon the ascent of the lever 3o, so that it is necessary to break said arm T5 hy hing'ine' the latter at 92, so that when the friction-roller 5a*- strikes the said arm i' the latter will give away to 115 said lroller., allowingI the saine a free path. Suitable spring means may he i'irorided for returning the arm 7.5 to its extended position.

inasmuch as the recorder-wlreels ld are normallyin position to print '/iero. l have proi2 vided a means vfor morini; the type out ol' printing position on one or niortl ol wheels where the 'nuinher to le ','ceordlld come, prises lesshgures the: the total nunther of said recorder-wleis in order that a nninher will not he preeei'led hy a series oi' "Us". Such a device comprises a phi ,ll, havin i ,head 9a adapted tonneau the. lever l iin-ils raise-d 'frosiion Pin .l) passes lhrouljli a STC. Ci

et an extensionr il() on thefraine 50, so that l slotted spring-casing' Sie and is proridotlmwith 130 97, and. the balance of s he stroke of the lever 'a vertical pin 100, engaging' a. slot 107 in the vcheek 1i-1 the end ot' the lever o0 strikes the 'would he preventtal hy the lgroosenefiks 253.

a collar 90, trictionally held thereon within said easing' and having' seated in said collar a 1 vertical pin 97, eng,'a, ,rin, a slot 98 in the hell- 1.

detainnQ-pin 105. Pin 105 has seated therein hell-crank 99.

109 represents a seriesot' elongated perforations in the recorder-wheels 30. As the triction-roller 42 passes under the projectimgl,F

head 94 of the pin 98, forcing' said pin inwardlyin opposititm to the spring' 110, carr ing' the collar 90 and the pin 97 toward th\ l front of the machine and operating' the hellcrank 99 to force the pin 105 into the perforations 109 lmtil said pin contacts with the lirst recorder-wheel which has been set. 1t will be noted that such operation takes place subsequently to the setting of the recerder- 1 wheels to be used in the printing' operation.` 1 When the pin 105 .strikes the face of the lirst recorder-wheel in theseries set pin 100 hroughttoastandstill, (logging the movement 1 of bell-crank 99, and consemixently the pin 36 compensated fonby the sliding' et' the pin 93 through the collar 96 in opposition to the spring' 95, which stn'ing 95 is of greater strength than the sprl. g' 110 in the casing'90.

ln order to move the type on the,non-se lected recorder-wheels which precede the. highest unit inthe number to he recorded out o1 printing' position through the medium o1 the @taining-pin 105, I have constructed the rel eerder-wheels 30 in` two overlapping parts 1 adapted to oscillate#relatively to eaeh other I and said parts conatrising an upper 'segment 1 carrying type and lower segments carrying 1 teeth 56, adapt-ed tor engage the transmittingwheels-19. The uppersegmentot said wheels 30 is-held normally in extended position toward the printingJ platen at the rear o1 the machine hy sprin 123. After the pin 105 has entered the slots 109 upon the'engagement of the pin 93 hy frame f1.1 and as a lseries ot' recorder-wheels are. thrown int-o printing operation hy the recorder-l'rame the upper seg'- I mentsot' the non-sigrnllicant Zero reeorderl wheels 210 are drawn haekward hy pins 1115 through the l'o'rward n'iovement o1l l'rame ll1 l in opposition 4'to spring; 12?, thereliy drawing' the type 'on the upper segments ot'the non-signilicant Zero-wheels11outol printing' g position. Strich construction o1` the wheels 30 is necessary inasnmch as when such wheels are in their ero positions hackward rotation ot' said wheels toward the Front of the machine 1n order to insure cm'rect alinennnt ot' the several recorder-wheels during' the printing' opera-tion, 1 have provided a series ot npg wardly/curved peripheral slots 111 in thel lnotches 120 in one side ot said slot.

l wheels 30 between the type on said wheels and adapted to engage a transverse har 112 when the wheels are thrown inlo tlrir printing positions to lock said wheels against movement. liar 112 is iournaled in hollow posts 113, said posts heine' provided with slots 1 11 to allow a `free movement ot'the har 1 12therein.

115 represents springs secured at one end to posts 112rfand at their other ends to har 112, said springs 115 being' adapted to hold har 112 in engagement with the slots 111. Slots 111 are curved upwardly, so that upon the return of the .several recorder-wheels to their Aero positions the har 112 will leave the said slots readily.

116 is the platen-carriage carrying platen #17. ln order to make the carriage 116 easily removable from its supporting-frame 11T, ,1 have provided the same with a sleeve 118. having' a longitudinal slot 119 therein and The sleeve 118 is seated on track 121, secured to the standards 122 ot' the frame 117, said sleeve being seated on the track 121, tln.l slot 119 allowing tor the passage ol'l the standards 122 and said sleeve being' turned fm'ward, so that the posts 122 engage the notches 120 insleeve 118 to lock the carriage upon its track.

My invention may he. applied equally as well to a registering' as to a recording' apparatus, although l have descrihed the same in connection with the latter. ln the drawings for the sake ol'l clearness some ol" the parts have been omitted---sucln tor instance, as the printingrihhon, in the arrangement otl which l claim no invention.

l do not wish to he limited to the exact details ofstructnre herein shown and described, inasmuch as many ot' the same may he varied without departing' from the spirit ot' my invention. y

Having thus deserihed my invention, what I claim as new therein, and desire to secure hy Letters latent, is

1. 1n a mechanical calculator of the character descrihed, the combination with a series ot' alljustalily-mounted keys and a series ol recorder-wheels, ot' a series ol' slide-hars adaptedto he. engaged and controlled hy said keys, and a series .1f spring-acluated goosenecks connectedl to and aeluatimg `said wheels and having' forked eudsemragng' said hars to control the movement o1' said le'oosenecks.

2. 1n a mechanical ealeulator et' the character deserihed, the comhination with a series ot' adjustal)ly-mmmted keys and a series ot' recorder-wheels, of a series ot' slide-hars adapted to he engaged and controlled hy said keys,

of a series of spring-actuated gooseneeks connected to and adapted to actnate said recorderwheels, and having' forked ends` and protractor-hars connected at their forward ends to said slide-hars, and adapted to slidalily engage at their rear ends the forked ends of said rooseneeks to control the movement otl the latter.

TIO

Wheels to predetermined positions, of a series of accumulating-wheels carried by said frame, means for throwing said accumulating-wheels into engagement with said recorder-wheels while the latter are in their advanced positions, of means for returning said recorder-wheels to their zero positions while in engagement with the said accumulating-wheels, of a series of spring-actuated gears, of means 'for dogging the said gears, of a series of bell-cranks adapted to disengage said gears, of means carried by each of said accumnlating-wheels adapted to actuate a bell-crank to release the next adjacent gear of higher denomination, of means for disengaging the accumulatingwheels from said recorder -wheels and for throwingthe same'into engagement with said gears', and means for retnrningsaid gears to their normal position.

l2. ln a mechanical calculator of the character described, the combination with an oscillating frame and a series of recorder-wheels carried thereby, of means for advancing said ree(nder-wheels to predetermined positions, o l' an o])erating-shaft,v of an arm rigidly mounted on said shaft, of a post rigidly mounted adjacent said shaft, of a motor-spring connecting' said post and arm, and suitable connection between said frame and said shaft to move the frame in opposition to said motor-spring to throw said recorder-wheels into printing operation, said spring being adapted to return said frame and recorder-wheels to their normal positions upon release of the operatingshat't.

13. In a mechanical calculator ofthe character described having a suitable casing, the combination with a suitable frame, a series of recorder-wheels carried by said frame and .each having a segmental slot, of means for advancing said recorder-wheels to predetermined positions, of an operating-shaft, of a rigid arm mounted on said shaft, of a post mounted in the said casing, of a motor-spring connecting said post and said arm, of a transver'se bar extending through said segmental slots, a crank-arm mounted on the axis of said recorder-wheels and connected to said transverse bar, a second arm mounted on said operating-shaft, a swivel connection between said second arm and said crank-arm, and means carried by said second arm for engaging said frame to irst move the latter to the rear to 'throw said recorder-wheels into printing operation and then to return said frame to its normal position.

14. In a mechanical calculator of the character described, the combination with a series of recorder-wheels, means for advancing said recorder-wheels to predetermined positions, ol' a series of juxtaposed accumulating-wheels, means for throwing said aecumuiating-wheels into engagement with said recorderwheels' after the latter have been advanced to their predetermined positions, of a series of juxtaposed gears, means for holding said gears normally in rievatrd positions, of a series of juxtaposed bell-cranks each having a hooked lower end in the path of the next adjacent accumulatingwheel of'lower denomination, said bell-cranks adapted to release said gears, of means for returning said recorder-wl'iecls to zero positions while in engagement with said accumulating-wheels, of pins carried by said accumulating-wheels and adapteigl to engage and actuate said bell-cranks to release said gears, of means for (,lisengaging the said accuinulatingwheels after the return of the recorder-wheels tozero position to throw the former intothe line of engagement with said gears, of' means for returning said gears to their normally elevated position after said accumulating-wheels have been thrown into the line of engagement therewith, of means for simultaneously7 advancing-said recorderwheels and throwing said accumnlatingwheels into engagement therewith, said pins adapted also to enter the hook on the lower end of said bell-cranks to linut the forward movement of said recorder- "\'vhcels,and means for throwing said recorderywheels into printing operation.

15. in a mechanical calculator of the character described, the combination with an oscillating 'frame of a series of recorder-wheels vof different denominations mounted thereon and having detaining-slots therein` of means for advancing the recorder-wheels of selected denominations to predetermined positions, of means for throwing said selected wheels into lprinting oi'ieration, of a detaining-pin adapted to enter the detaining-slots of the non-selected wheels of higher denomination to move the type on said wheels out of printing position, of a suitable bell crank engaging said pin, and means for engaging' said bell-crank to actuate the latter when the selected wheels are thrown into printing operation.

16. in a mechanical calculator of the character described, the combination with a recorder-wheel comprising two overlapping segments adapted to normally move in unison, of means adapted to engage one of said segments to oscillate said segment relatively to the other and movethe type on said recorderwheel out of printing position'f i7. in a mechanical caeulator of the character described, the combination with a recorder-wheel comprising relatively movable segments, and spring means causing said/segments to normally move in unison, of means operating in opposition to said spring means adapted to move one of said segments independently to move the type portion of the recorder-wheel out of printing operation.

18. ln a mechanical calculator of .the char- IOO IIO

acter described, the combination with t-liegos- 'normal position., and `For advancing Seid reeerder-wheels to predetermined printing` position, e uumlr-arm mounted on the axis of said reeorder-wheels a transverse her monnt- 5 ed on `mid crank and engaging' seid segmental Slot5 and ineen-S for hetnet-hug Seid crank-erm.

'19. ln zi meeheniezl Calculator of the ohm'- neter described, the Combination with the frame and o-eeriee of recorder-wheels mount- IO ed on seid trame., of a Series oi' :auitehly-mmnt ed accumulatirig-wheele, a serios olc suitablymounted goers, a series et' latches holding` said gears normally in elevated positions, e series oi liiell-eranki-3 tor releasing; said latches and I5 having hooked ends, a serieel of tripping-pins so mounted on the eccmnnletingexvheele :is to trip said hell-cranks upon rotation of thee@- Cumuleting-wheels in one direction sind to he caught in the hooked ends ot' seid hell-cranks 2O upon rotation o'r` eeeuinuletingnvheels in the opposite direction., ineens for moving said aceumuleting-wheels into and out of mesh with the recOrder-Wheele and for moving); Said im oun1ulating-wlieels :1nd the tripping-'inns into mesh with said ,1g-ears und means lor returning 213 seid gears to their hitched punition while in engagement with sind :ieenmnlfi'in '-wheele 20. In 2L Calculatingnnicliine of .the herauf VJitnesses:

UHAS. R. Rooi-nfs, HARRY A. lriieirr. 

